diff --git a/Include/auROXTL/auAtomic.hpp b/Include/auROXTL/auAtomic.hpp
index d85b5d1..e061e47 100644
--- a/Include/auROXTL/auAtomic.hpp
+++ b/Include/auROXTL/auAtomic.hpp
@@ -18,13 +18,21 @@ struct AuAtomicUtils
     static T    Set(T *in, AuUInt8 offset);
 
     /**
-     * @brief 
-     * @param in 
-     * @param orValue 
-     * @return original value 
+     * @brief
+     * @param in
+     * @param orValue
+     * @return original value
     */
     static T    Or(T *in, T orValue);
 
+    /**
+     * @brief
+     * @param in
+     * @param andValue
+     * @return original value
+    */
+    static T    And(T *in, T andValue);
+
     /**
      * @brief Adds addend to in
      * @return updated value 
@@ -226,6 +234,59 @@ inline auline T AuAtomicUtils<T>::Set(T *in, AuUInt8 offset)
     return AuAtomicUtils<T>::Or(in, T(1) << offset);
 }
 
+#if !defined(AURORA_IS_32BIT)
+template <>
+inline auline AuUInt64 AuAtomicUtils<AuUInt64>::And(AuUInt64 *in, AuUInt64 AndValue)
+{
+    return _InterlockedAnd64(reinterpret_cast<long long volatile *>(in), AndValue);
+}
+#endif
+
+template <>
+inline auline AuUInt32 AuAtomicUtils<AuUInt32>::And(AuUInt32 *in, AuUInt32 AndValue)
+{
+    return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
+}
+
+template <>
+inline auline AuUInt16 AuAtomicUtils<AuUInt16>::And(AuUInt16 *in, AuUInt16 AndValue)
+{
+    return _InterlockedAnd16(reinterpret_cast<short volatile *>(in), AndValue);
+}
+
+#if !defined(AURORA_IS_32BIT)
+template <>
+inline auline AuInt64 AuAtomicUtils<AuInt64>::And(AuInt64 *in, AuInt64 AndValue)
+{
+    return _InterlockedAnd64(reinterpret_cast<long long volatile *>(in), AndValue);
+}
+#endif
+
+template <>
+inline auline AuInt32 AuAtomicUtils<AuInt32>::And(AuInt32 *in, AuInt32 AndValue)
+{
+    return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
+}
+
+template <>
+inline auline long AuAtomicUtils<long>::And(long *in, long AndValue)
+{
+    return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
+}
+
+template <>
+inline auline unsigned long AuAtomicUtils<unsigned long>::And(unsigned long *in, unsigned long AndValue)
+{
+    return _InterlockedAnd(reinterpret_cast<long volatile *>(in), AndValue);
+}
+
+template <>
+inline auline AuInt16 AuAtomicUtils<AuInt16>::And(AuInt16 *in, AuInt16 AndValue)
+{
+    return _InterlockedAnd16(reinterpret_cast<short volatile *>(in), AndValue);
+}
+
+
 #elif defined(AURORA_COMPILER_CLANG) || defined(AURORA_COMPILER_GCC)
 
 template <class T>
@@ -258,6 +319,12 @@ inline auline T AuAtomicUtils<T>::Or(T *in, T value)
     return __sync_fetch_and_or(in, value);
 }
 
+template <class T>
+inline auline T AuAtomicUtils<T>::And(T *in, T value)
+{
+     return __sync_fetch_and_and(in, value);
+}
+
 #endif
 
 template <class T>
@@ -315,6 +382,13 @@ T    AuAtomicSet(T *in, AuUInt8 offset)
     return AuAtomicUtils<T>::Set(in, offset);
 }
 
+template <class T>
+auline
+bool AuAtomicUnset(T *in, AuUInt8 offset)
+{
+    return AuAtomicUtils<T>::And(in, ~(1u << AuUInt32(offset))) != 0;
+}
+
 template <class T>
 auline
 T    AuAtomicOr(T *in, T value)
@@ -322,6 +396,13 @@ T    AuAtomicOr(T *in, T value)
     return AuAtomicUtils<T>::Or(in, value);
 }
 
+template <class T>
+auline
+T    AuAtomicAnd(T *in, T value)
+{
+    return AuAtomicUtils<T>::And(in, value);
+}
+
 template <class T>
 auline
 T    AuAtomicAdd(T *in, T addend)